If I Had the Wings of a Bugaloo - S1-E5
Other mistake: After Courage and Joy are free from the glue traps, there is still glue on their feet, yet they walk without any trouble.
If I Had the Wings of a Bugaloo - S1-E5
Other mistake: Joy's feet are stuck in Benita's glue trap, but she steps backwards twice before Harmony and Courage pull her out.